For example, during the collapse of Nokia mobile phones, Nokia still relied on a large number of patents to achieve profitability. Why is Huawei the only domestic brand that has entered the European market? There are many patent trolls in Europe, and only by relying on patents can we gain a foothold. Xiaomi, Meizu and Oppovivo have difficulty entering the European market and can only occupy low-consumption markets such as India and Southeast Asia. Finally, Huawei authorized 769 patents from Apple in 2015. The patent fees were hundreds of millions of dollars, which is four to five billion yuan converted into RMB, which is also a considerable sum! Huawei's annual R&D expenses are more than 10 billion. Few companies have such high R&D expenses, but the patent fees paid by Apple alone to Huawei have reached 4 to 5 billion!